CN101010773A - Image display device and method of manufacturing the device - Google Patents

Image display device and method of manufacturing the device Download PDF

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Publication number
CN101010773A
CN101010773A CNA2005800288427A CN200580028842A CN101010773A CN 101010773 A CN101010773 A CN 101010773A CN A2005800288427 A CNA2005800288427 A CN A2005800288427A CN 200580028842 A CN200580028842 A CN 200580028842A CN 101010773 A CN101010773 A CN 101010773A
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CN
China
Prior art keywords
degasification
separate layer
layer
metal lining
image display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2005800288427A
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Chinese (zh)
Inventor
小柳津刚
奥土幸男
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Toshiba Corp
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Toshiba Corp
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Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Publication of CN101010773A publication Critical patent/CN101010773A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/28—Luminescent screens with protective, conductive or reflective layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels
    • H01J2329/18—Luminescent screens
    • H01J2329/20—Luminescent screens characterised by the luminescent material

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

The front panel of an image display device is provided with a plurality of phosphor layers (6) formed on a glass board (4); a plurality of light absorbing layers (5) provided between the phosphor layers, respectively; a metal back layer (1), which is formed on the phosphor layers and is electrically divided into a plurality of pieces; a plurality of getter dividing layers (2), which are formed on the light absorbing layers by depositing an insulator as a cliff-shaped deposit having a wall surface formed within a range of 90 to 80 degrees to a metal back layer surface; and a plurality of getter layers (3) wherein the getter layer on the metal back layer and the getter layer on the getter dividing layer (2) are electrically insulated by being stacked on the metal back layer and the getter dividing layer, respectively. The getter layer formed on the getter dividing layer and the getter layer formed on the metal back layer are sufficiently separated, discharge chaining is prevented and the image display device having excellent operation stability is provided.

Description

Image display device and manufacture method thereof
Technical field
The present invention relates to such as the flat-panel picture display device of field-emitter display (FED) and the manufacture method of this display.
Background technology
In recent years, dull and stereotyped image processing system is developed.In this flat board image processing system, be necessary that with predetermined pattern the metal lining on the prebasal plate being carried out electricity separates, so that the discharging current when suppressing between the prebasal plate and metacoxal plate discharge to take place in the fluorescent surface structure.And removing air film in formation on the metal lining of prebasal plate is common procedure to keep the condition of high vacuum degree between prebasal plate and the metacoxal plate.Yet,,, therefore be necessary as in the above-mentioned metal lining situation its electricity being separated owing to remove the gas-bearing formation conduction at this.
Patent documentation 1 (Japanese Patent Application Publication No.2003-68237) discloses a kind of image display device and manufacture method thereof, and the separation that wherein removes gas-bearing formation is carried out except that gas-bearing formation is divided into a plurality of layers particulate film by forming on metal lining conduct electricity.More specifically, according to this method, the particulate that its particle diameter is controlled as required suitably forms pattern forming the shape of similar film in the precalculated position on metal lining, thereby removes air film separating in the air film forming process as removing of following steps.
Yet, the method for use conventional art, except that the separation character instability of air film, so the corresponding step-down of productivity ratio.And, because the distance between the degasification membrane portions through separating is very short, in case discharge, when flowing between the membrane portions through separating chain discharge can take place at electric current.As a result, discharging current can not reliably be controlled, and this does not expect.
Summary of the invention
Insulate reliably each other preventing that extensive discharge from realizing the image display device of good operational stability thereby an object of the present invention is to provide wherein a plurality of air films that remove, and the manufacture method of this display unit.
According to an aspect of the present invention, provide to comprise the front panel that faces with each other by bedding and padding therebetween and the image display device of rear board, it is characterised in that front panel comprises: a plurality of luminescent coatings that form on glass substrate; Be separately positioned on a plurality of light absorbing zones between a plurality of luminescent coatings; The metal lining that on a plurality of luminescent coatings, forms, separate through electricity; The a plurality of degasification separate layers that form thereon by deposition insulator on a plurality of light absorbing zones, each degasification separate layer is a cliff shape deposit, its sidewall surfaces is with respect to the angles of surperficial one-tenth 90 to 80 degree of metal lining; And a plurality of gas-bearing formations that remove that on metal lining and degasification separate layer, pile up respectively, be electrically insulated from each other with the gas-bearing formation that removes that on corresponding degasification separate layer, forms at the gas-bearing formation that removes that forms on the respective metal lining.
Use the said structure of image display device according to an embodiment of the present invention, the sidewall surfaces of degasification separate layer forms has the cliff shape that becomes 90 to 80 degree angles with the degasification separate layer, and the degasification layer segment that therefore forms on the degasification separate layer forms at a distance of enough distances ground each other with another degasification layer segment that forms on metal lining.
And the thickness of degasification separate layer is set to enough big, for example in 5 to 30 microns scope.Therefore, in said circumstances, the degasification layer segment that forms on the degasification separate layer and another degasification layer segment that forms on metal lining form at a distance of enough distances ground each other, therefore can between a plurality of degasification layer segments insulation be set reliably.Like this, remove gas-bearing formation and can be separated into a plurality of parts by electricity.Therefore, a plurality of metal linings can be electrically insulated from each other, thereby might suppress from behind plate reliably to the paradoxical discharge of front panel.Therefore, might provide image display device, and this image display device can be produced in batches in reliable mode with excellent operation stability.
Description of drawings
Fig. 1 is the cross section of a front panel example of image display device according to an embodiment of the present invention;
Fig. 2 is the cross section that illustrates according to the enlarged drawing of a degasification separate layer example of the front panel of the image display device of this execution mode;
Fig. 3 illustrates according to a degasification separate layer of the front panel of the image display device of this execution mode and removes the cross section of the enlarged drawing of gas-bearing formation example;
Fig. 4 illustrates the schematic diagram of formation according to the step of the degasification separate layer of the front panel of the image display device of this execution mode;
Fig. 5 is the cross section that illustrates according to a topology example of the image display device of this execution mode;
Fig. 6 is the chart that illustrates according to a flash-over characteristic example of the image display device of this execution mode.
Embodiment
Describe an execution mode of display unit of the present invention in detail referring now to accompanying drawing.Fig. 1 is the cross section of a front panel example of image display device according to an embodiment of the present invention.Fig. 2 is the cross section that illustrates according to the enlarged drawing of a degasification separate layer example of the front panel of the image display device of this execution mode.Fig. 3 illustrates according to a degasification separate layer of the front panel of the image display device of this execution mode and removes the cross section of the enlarged drawing of gas-bearing formation example.Fig. 4 illustrates the schematic diagram of formation according to the step of the degasification separate layer of the front panel of the image display device of this execution mode.Fig. 5 is the cross section that illustrates according to a topology example of the image display device of this execution mode.Fig. 6 is the chart that illustrates according to a flash-over characteristic example of the image display device of this execution mode.
＜according to an embodiment of the present invention image display device 〉
(structure)
Describe an execution mode of display unit of the present invention in detail referring now to accompanying drawing.As shown in Figure 5, comprise the glass substrate 4 of front panel according to the image display device D of this execution mode and the glass substrate 8 of the rear board that is provided with in the face of the glass substrate 4 of front panel.Therefore, front panel comprises glass substrate 4, the luminescent coating 6 by forming image from the irradiation of electron source electrons emitted bundle and at least as the metal lining 1 of metal level.The glass substrate 4 of front panel and the glass substrate 8 of rear board are positioned opposite to each other, have an appointment therebetween 1 to several millimeters narrow clearance G, and use this structure, 5 to 15kV high voltage is applied on the clearance G of extremely narrow distance between the glass substrate 8 of the glass substrate 4 of front panel and rear board.And a large amount of electron-emitting devices 7 that are arranged in matrix are set on the glass substrate 8 of rear board.
At this, according to the embodiment of the present invention, metal lining 1 is set on the glass substrate 4 of front panel of image display device D.Though in Fig. 1, be not shown clearly in, metal lining part and other parts electric insulation that degasification separate layer 2 forms therein.That is, as shown in Figure 1 as example, a plurality of light absorbing zones (black matrix layer) 5 are provided with the groove that these layers are electrically insulated from each other.
In addition, might its electricity be separated into insulated from each other a plurality of layers by aluminium lamination is changed into aluminium oxide.Like this, even in a single day discharge takes place, also can prevent chain discharge in metal lining.Similarly, remove gas-bearing formation and can be divided into of the measure of the zone of a plurality of electric insulations as the reply discharge.Be separated into the strip pattern of reliable insulation each other in order to be positioned at top gas-bearing formation 3 electricity that remove, deposit insulator in the groove that between metal lining, forms and on a plurality of light absorbing zone.Like this, be provided with a plurality of degasification separate layers 2, these degasification separate layers 2 are deposited as the cliff shape makes its sidewall surfaces become angle in 90 to the 80 degree scopes corresponding to the respective metal lining.
Promptly, in image display device D according to the present invention, as using the shown in Figure 5 of (a) among Fig. 4 of the present invention, element 4,6 and 1 front panel and rear board 8 form by bedding and padding, comprise that as shown in Figure 5 the front panel of element 4,6 and 1 and the space between the rear board 8 be pumped into high vacuum.Therefore, make by from the electron source 7 that is arranged on rear board to the fluorophor divergent bundle that is arranged on front panel with the luminous front panel that comes the image display device of display image.Formation step according to the degasification separate layer 2 of the front panel of the image display device of present embodiment is shown in Figure 4.
Shown in (a) among Fig. 4, at first, a plurality of luminescent coatings 6 form on glass substrate 4 and a plurality of light absorbing zone 5 forms between luminescent coating respectively.In addition, metal lining 1 forms on luminescent coating and light absorbing zone, and the metal lining that will be arranged at light absorbing zone is partly removed to form groove.Therefore, metal lining is separated into a plurality of parts.
Then, shown in (b) among Fig. 4, for example, material 11 is forming on the light absorbing zone and near the respective groove of metal lining.Then, shown in (c) among Fig. 4, the degasification separate layer is patterned into the part of cladding material 11, toasts these layers afterwards.Then, shown in (d) among Fig. 4, remove material 11, therefore remaining as shown in Figure 4 degasification separate layer 2 is configured as and has cliff shape predetermined taper angle θ.
At this, material 11 can be the available type of removing such as the specific purpose tool of tweezers or cutter, perhaps can be by the type of thermal ablation removal.Perhaps it can be the type of removing by with suitable chemical solvent dissolving.In addition, it can be can be by the type that makes it be easy to Chemical Decomposition, remove with for example blast then.Should be noted that in various situations, should prepare to be suitable for its corresponding type that removes method for material 11.
At this, if cone angle is 0 degree or above (sidewall surfaces is 90 degree with angle between metal-backed), then the deposition from the perfusion of the top of degasification separate layer 2 can not be separated except that air film.On the other hand, when it is 80 degree or when following, might form degasification separate layer 2 with stationary mode.In addition, when the thickness of degasification separate layer be 5 microns or when following, the distance of removing between the air film that is separated becomes too short, thereby produces chain discharge.On the other hand, when it was 30 microns, degasification separate layer itself was as discharge source.For those reasons, the thickness of degasification separate layer 2 must drop in 5 to 30 microns the scope.
The example of degasification separate layer 2 is such as SiO 2, TiO 2, MnO, ATO, ITO, Al 2O 3And Fe 2O 3Filler, but the present invention is not limited thereto.Another may be to add vitrifying agent to strengthen film strength.
(detailed description of better embodiment)
At this, the method for manufacturing image display device according to an embodiment of the present invention will be described in more detail by by way of example.
At first, luminescent coating 6 precalculated position on the glass substrate 4 of plate in front is graphical, and further forms the Al layer thereon.This Al layer is the metal lining of being separated by the predetermined pattern on the luminescent coating 61.Luminescent coating 6 forms by the conventional method such as silk screen print method, and the conventional method that graphically can pass through to deposit such as mask of Al layer 1 forms.Then, by manufacturing process as shown in Figure 4, degasification separate layer 2 forms on the Al separation pattern that forms on the glass substrate 4 by silk screen print method.That is, resin bed forms by using the silk screen print method of forming B, and degasification separate layer 2 forms by using the silk screen print method of forming C then.In addition, product is toasted under 450 ℃ temperature to remove resin bed, therefore obtain degasification separate layer 2.
Should be noted that composition is defined as:
Form B ethyl cellulose 8wt%
Butyl carbitol acetate ester 92wt%
Be fine into C Fe 2O 3(1nm) 15wt%
Melten glass 20wt%
Ethyl cellulose 6wt%
Butyl carbitol acetate ester 59wt%
The glass substrate 4 of the additional degasification separate layer that therefore obtains and the glass substrate 8 of additional electrical component are bonded together by bedding and padding therebetween.Then, the inside between these substrates is evacuated and further will be deposited on the glass substrate 4 except that air film 3 in vacuum tank.Therefore, made high vacuum image display device D (F1).In addition, use identical method to prepare F2 and F3.F1 to F3 applies voltage to these panels, and therefore measures discharge voltage and discharging current as the characteristic that discharge takes place between glass substrate 4 and the E.Gained is the result be summarized among Fig. 6.
(the comparable example of using-system G)
In addition, use the degasification separate layer 2 of the composition G that is defined as follows on the Al separation pattern that forms on the glass substrate 4, to form, therefore form the glass substrate 4 of additional degasification separate layer.Then, image display panel I1 is by obtaining with method like the above-mentioned example class.
Forming G is defined as:
Form G SiO 2(1.5 μ m) 20wt%
Melten glass 15wt%
Ethyl cellulose 6wt%
Butyl carbitol acetate ester 59wt%
In addition, use this method, preparation image display panel I2 and I3.Voltage puts on image display panel I1 to I3, and therefore measures discharge voltage and discharging current as the characteristic that discharge takes place between glass substrate 4 and the glass substrate 8.Gained result example as a comparison is summarized in the chart 6.As understanding from Fig. 6, the panel of example is at the panel that is better than comparative example aspect discharge voltage and the discharging current, and the panel of example is more stable with regard to variant.
As mentioned above, in the image display device of example of the present invention, the degasification separate layer form have and the cone angle of metal lining in 0 to 80 degree scope (sidewall surfaces and metal-backed between the angle be 90 degree) the cliff shape.Use this structure, what removing of forming on the degasification separate layer formed on air film and the metal lining fully separates each other except that air film.Therefore, can prevent that therefore chain discharge from also might provide image display device with excellent operation stability and the method for making this device.
Use above-mentioned various example, those of ordinary skills may realize the present invention.In addition, expect the various variants of example or apply the present invention to various execution modes and need not creativity for those of ordinary skills easily.Therefore, wide range of the present invention, as long as variant does not contradict with disclosed principle or novel feature, so the present invention is not limited to above-mentioned example naturally.

Claims (5)

1. an image display device comprises by bedding and padding therebetween front panel and rear board positioned opposite to each other, it is characterized in that described front panel comprises:
The a plurality of luminescent coatings that on glass substrate, form;
Be separately positioned on a plurality of light absorbing zones between described a plurality of luminescent coating;
The electricity that forms on described a plurality of luminescent coatings is separated metal lining;
By depositing a plurality of degasification separate layers that insulator forms thereon, each degasification separate layer is a cliff shape deposit on described a plurality of light absorbing zones, and its sidewall surfaces is with respect to the surperficial one-tenth of metal lining 90 to 80 degree angles; And
The a plurality of gas-bearing formations that remove that pile up on described metal lining and described degasification separate layer respectively are electrically insulated from each other with the described gas-bearing formation that removes that forms on described corresponding degasification separate layer at the described gas-bearing formation that removes that forms on the described respective metal lining.
2. image display device as claimed in claim 1 is characterized in that the thickness of described degasification separate layer is in 5 microns to 30 microns scope.
3. make the method that wherein front panel and rear board are pumped into the image display device of high vacuum by the space between front panel positioned opposite to each other and described of bedding and padding therebetween and the described rear board for one kind, described image display device by the electron source divergent bundle from be arranged on described rear board so that the light-emitting phosphor that is arranged in the described front panel comes display image, described method is characterised in that, comprising:
On glass substrate, form a plurality of luminescent coatings;
Formation is separately positioned on a plurality of light absorbing zones between described a plurality of luminescent coating;
On described a plurality of luminescent coatings, form metal lining and described metal lining electricity is separated into a plurality of metal linings;
Deposit insulator on described a plurality of light absorbing zones, thereby form a plurality of degasification separate layers, each described degasification separate layer is a cliff shape deposit, and its sidewall surfaces is with respect to the angles of surperficial one-tenth 90 to 80 degree of metal lining; And
Form a plurality of gas-bearing formations that remove that are stacked on respectively on described metal lining and the described degasification separate layer, be electrically insulated from each other with the described gas-bearing formation that removes that on described corresponding degasification separate layer, forms at the described gas-bearing formation that removes that forms on the described respective metal lining.
4. manufacture method as claimed in claim 3 is characterized in that the thickness of described degasification separate layer is in 5 microns to 30 microns scope.
5. manufacture method as claimed in claim 3, it is characterized in that, the cone angle of each degasification separate layer is by being provided with predetermined layer will forming on the both sides, position of described degasification separate layer before forming at described corresponding degasification separation membrane, and the described predetermined layer of evaporation realizes then.
CNA2005800288427A 2004-08-31 2005-08-30 Image display device and method of manufacturing the device Pending CN101010773A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP252700/2004 2004-08-31
JP2004252700A JP2006073248A (en) 2004-08-31 2004-08-31 Image display device and its manufacturing method

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CN101010773A true CN101010773A (en) 2007-08-01

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US (1) US20070207695A1 (en)
EP (1) EP1786018A1 (en)
JP (1) JP2006073248A (en)
KR (1) KR20070051290A (en)
CN (1) CN101010773A (en)
TW (1) TWI264750B (en)
WO (1) WO2006025385A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008123956A (en) 2006-11-15 2008-05-29 Canon Inc Image display device
US7834535B2 (en) 2006-12-25 2010-11-16 Canon Kabushiki Kaisha Flat panel type display apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000348654A (en) * 1999-06-04 2000-12-15 Mitsubishi Electric Corp Light emitting device
JP2003068237A (en) * 2001-08-24 2003-03-07 Toshiba Corp Image display device and manufacture thereof
JP3971263B2 (en) * 2002-07-26 2007-09-05 株式会社東芝 Image display device and manufacturing method thereof

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KR20070051290A (en) 2007-05-17
WO2006025385A1 (en) 2006-03-09
EP1786018A1 (en) 2007-05-16
TWI264750B (en) 2006-10-21
JP2006073248A (en) 2006-03-16
US20070207695A1 (en) 2007-09-06
TW200615997A (en) 2006-05-16

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Open date: 20070801